Vanessa
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projective geometry question
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Plane projective transformations can be viewed as linear operators in a 3D vector space V. A circle (more generally an ellipse) in the projective plane P(V) corresponds to a cone C in V. Such a cone ...

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Multivariate analogue of Jackson's inequality's modulus of continuity form
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1 votes

Cartwright and Kucharski give a generalization of Jackson's inequality for an arbitrary compact connected Lie group. I only need the uniform norm, rank 1 case for the canonical torus, so I state here ...

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Are all quantum cellular automata invertible & representable?
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Niel de Beausdrap found this article. The authors (Schumacher and Werner) propose a definition of quantum cellular automata and prove they are always invertible (Corrolary 7 on p. 10). Nominally their ...

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